During my exploration of “locavorism,” a colloquialism for eating local, I encountered a post of Freakonomics that took an economic perspective on eating local.
One of my favorite points that the author, Stephen Dubner, makes is that, quite possibly, its more resource intensive to cultivate food on a local, and even personal, level, as opposed to getting food from “farmers” that do mass production of crops.
Dubner provides several examples in which doing something “from scratch” is more expensive/labor intensive than simply buying it. He references planting a garden, as well as making one’s own clothing using a pattern.
Additionally, mass producers of food may have better ways to “stream line” their use of chemicals which can affect the environment.